/Engine/Source/Runtime/Experimental/Chaos/Public/Chaos/CollectionPropertyFacade.h
Access to a writeable ManagedArrayCollection is protected, use an FPropertyCollectionMutableAdapter if needed to get a non const pointer.
[TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [FManagedArrayCollection](API\Runtime\Chaos\GeometryCollection\FManagedArrayCollection) > GetManagedArrayCollection()